Rubber heel



L.. KAPLAN RUBBER HEEL sept'll, 1923.

.KAPLAN g n I i" i" n ATTORNEY I Sept. 11, 1923. B,467.547

l.. KAPLAN RUBBER HEEL Filed Sept. 6. 1921 2 SheBtB-Shet 2 INYiNToR ATTORNEY Patented Sept. 1l, 1923.

LoUIs KArLAN, or Nnw YORK, N. Y.

RUBBER HEEL.

Application med September e, 1921.1 semi No. 498,631.`

rubber heel disclosed in my vcopendin'g appli-- cation led October 16, 1920, Serial No. 417,286.

The invention vhas for its object to provide the tread of the heel, in addition to ribs disposed one within the otherv in the relation as disclosed in said application, auxiliary or secondary means `to complementv or supplement the ribs to avoid skidding or, slipping, and to enhance the cushioning quality and wear resistance of the heel.

With the foregoing and other objects in View, which will be apparent as the descrip.-

tion proceeds, theinvention resides in the" construction and arrangement of partshereinafter described and claimed, it being understood that changes can be made within the scope of what is claimed without departing from the spiritfof the invention.

The invention is `illustrated in the accompanying drawings, wherein Figurel is a plan view ofthe first form of heel.

F iOs. 2 and 3 are sections ony the respective lines 2 2 and 3--3 ofiF ig. l.

Fig. 4 is a plan view of a second form of heel. f

Fig. 5 is a section on the Yline 5 5' of Fig. 4.

Fig. 6 is a plan view of a thirdY form of heel.

Fig. 7 is a section on the line 7 7 of Fig. 6.

Figs. 8 and 9 are `plan views of further modifications.

Referring to Figs. ,1, .2 and 3, the heel, which is molded from rubber or other equivalent material, has its tread surface provided thereon, `similar to thefheel shown in the aforesaid applicatiomwith the ribs 8, 9 and l0. Such ribs are of U-ishape, with their ends terminating adjacent to the breast or forward end of the heel, and such ribs are Y broken or interrupted between their bends and terminals, where such ribs are intersected by transverse ribs 18 and 19 'formed on the tread surface of the heel and arranged v one` within the other. The ribs 18v and 19 are continuous. and extend into the broken out or interrupted portions of thermain ribs- 8. 9 and 10-to the sides of* the heel." The ribs 8,9 and 10 of them'ain'set and also the ribs 18 and 19 of thesecondaryor auxiliary set vare disposed one within the otherv in spacedl relation and are of gradually diminishing width and height from thelouter to the inner ribs. The ribs 9 and 10 a-re'spacedl increasingdistances'from the plane ofthe rib 8, andthe rib 19 is lsimilarlyspacedfrom the pla-ne of the rib 18. Thus, at the outset,

the wear comes on the outer thick ribs 8 and 18 oyf-the'two sets, and when'said outer i and resilient qualities of the heel as it becomes worn. n The U-shaped ribs with their ends extending forwardly will prevent slipp'ageforwardly, while the ribs 18 and 19 will provide'fvacuum cupsY therein.l The tread portion of the heel has a cavity 4' therein between the ribsl() and'18 and another cavity 17 within the outlinefof the rib 19,l which cavitiesp'rovide vacuum cups surrounded byfthe'ribs-which will create suction, especially on wet or slippery.' surfaces, to avoidskidding or slipping ofthe heel. L

The ribs can be provided at suitable' vintervals or points with aperturesll to assist in preventing the slipping of the heel, and also,

vif desired, transverse notches 12.

are spaced apart, and the heel has crescentshape vacuum cupsy or cavities 70 between saidribs. The secondary ribsvlSO and are'located; within the rib 10() and are reversed longitudinally with refere'nceto vthe main ribs, so that the terminals of the secondary ribs project rearwardly, the ribs of the two sets diminishing in width and height from the outer rib of each set inward. The heel also has a vacuum cup or cavity 170 between the rib 100 and the secondary ribs and extending within the rib 190. This heel also has nail holes 130 between the ribs 80 and 90.

The form of heel shown in Fig. 6 has smaller main ribs 81, 91 and 101 with their terminals extending forwardly from the rear portion of the heel, and there are two sets of secondary ribs 181 and 191 with their bends adjacent to the forward corners of the heel and their terminals extending toward the center of the heel. The ribs of the three sets converge and meet at the center of the heel, and the heel has a vacuuml cup or cavity 71Abetween the sets of ribs and extending intol or within the inner ribs101 and 191. Within the intermediate portions or bends of the outer ribs 81 and 181, the heel has nail holes 131 and vacuum cupsor .cavities 171 at the tread ends of said holes, and the inner ribs have their intermediate portions formed -with reentrant curves around said nail holes. The

1 heel has other nail holes 131 located be- 83, 93, 103 and103 located one within the other and diminishing in width and height from the outer rib inward, and the terminals of the ribs extend angularly toward one another parallel with the breast or forward end of the heel and are of dierent lengths to provide spaces between the terminals. Suchy spaces of 'the ribs are in staggered relation, and the terminals 183, 193 and 203 'provide secondary anti-slipping means. The heel has a vacuum cup or cavityv 73. within the inner rib 103.

The ribs 84, 94 and 104 of the heel shown in Fig. 9 have their terminals extended toward one another at the breast or forward end of the heel and then angularly rearward, as at 184, 194 and 204, respectively, to provide the secondary anti-slip ping means, and the heel has a vacuum cup or cavity 74 within the outline of the rib 104. 1

The ribs of the several forms of heels shown can be provided with apertures or transverse notches or cuts, or both, as may be desired, and the heels also have suitable nail-holes for attaching them to 'the shoes.

yThe secondary ribs` or tread portions being located within the outline of the .main ribs, will provide a better support forthe heel. as well as providing better wearing qualities and resiliency or cushioning action. This arrangement will also reduce to ribs also entirely surround, substantially,`

the vacuum cup of each form of heel shown and described, with spaces between 'the ends of at leastsome of the ribs for the restricted ingress and egress of air, it not beingy desirable to have the relatively large vacuum cup sealed on the surface on which the heel rests because the suction would be too great. With the limited admission of air to the vacuum cup the heel'is prevented from slipping, and at the same time, is prevented from sticking to the surface, especially when the surface is wet.

Having thus described the invention, what is claimed as new is y 1. A heel of rubber or other resilient material having at the central portion of its tread surface a relatively deep cup of com,`

paratively large area, and ribs protruding from said surface and substantially surrounding said cup, said ribs being located one within the other between said ,cup and margin of the wheel, and said ribs decreasing. in height from the outer rib to the. inner one toward said cup. i

2. A resilient heel having on its tread sur-l face a plurality of sets of protruding ribs, the ribs of each set being U-shaped and located within the other, the ribs of each set decreasing in height from the outer yrib to the inner one, the intermediate portions of the ribs of said sets being at the front and rear ends of the heel with the ends of such ribs extending toward the oppositeends of the heel.

3. A resilient heel having at the central of its tread surface a relatively deep cup of comparatively large area, and a plurality of sets of ribs protruding from said surface and located between said cup and the margin of the heel, the. ribs of each set being U-shaped and located one within the other, said ribs of each set decreasing in height from the outer rib to the innerI one toward said cup, the intermediate portions of the ribs of said sets being at the front and rear ends of the heel with the ends. of said ribs cent to the margin of the heel, and the heel having a relatively deep cavity between said outer rib and the next inner rib extending above said tread surface, and said ribs being spaced apart along said cavity.

5. A resilient heel having on its tread surface protruding U-shaped ribs with their immediate portions at the rear end of the heel and spaced apart, said ribs being located one within the other, and the heel hav- E0 ties being comparatively deep to extend y above said tread surface.

In testimony whereof I hereunto affix my 15 signature.

LOUIS KAPLAN. 

